Major Depressive Disorder (IMAGE) Fujita Health University Caption Major depressive disorder affects over 300 million people worldwide, but so far there have been no established biomarkers that clinicians can rely on to detect early-stage depression symptoms. Now, in a new study published in Scientific Reports, scientists at Fujita Health University led by Professor Yasuko Yamamoto have shown that the levels of anthranilic acid in blood may provide a basis for identifying patients at risk of major depressive disorder. Credit Fujita Health University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.